GRP water tanks for villas: cooler water in summer and a 25-year warranty
We make underground and roof water tanks and septic tanks in our Dammam factory, sized for your household and shaped to fit your plot, and deliver them to any region.
- 25-year warranty
- Cooler water from a buried tank
- Any capacity from 2,000 L
- Delivery to every region
We reply within one working hour, Saturday to Thursday.
Cool water in summer, and no change in taste
Hot water from the tap and an odd taste are the two complaints Saudi homeowners raise most in summer. A buried tank sits out of the sun, so the water reaching the house is much cooler than water from a roof tank.
The common worry that fibreglass grows algae has a direct answer. Our tank wall is opaque, the inner surface is smooth, and the manhole has a tight cover against dust and insects. Algae need light; inside a closed opaque tank they cannot grow.
Every tank still needs cleaning, whatever it is made of. We recommend cleaning every six months through the 50 cm manhole on our underground tanks, which is wide enough for a cleaner to enter.
A roof tank in direct sun will warm up in summer regardless of material, so keep the main storage underground and the roof tank small or shaded.
How many litres does your home need?
The usual Saudi rule: people in the household × 150 to 250 litres per person per day × two or three days of reserve. The table uses 200 litres per person per day.
Do not oversize. Water standing too long in an oversized tank loses quality. Choose the three-day column if supply cuts are common in your district; otherwise two days is normally enough.
We build the exact capacity you choose on the diameter that suits your plot, so you do not have to jump from 5,000 to 10,000 litres.
| People | 2-day reserve | 3-day reserve |
|---|---|---|
| 4 | 1,600 L | 2,400 L |
| 6 | 2,400 L | 3,600 L |
| 8 | 3,200 L | 4,800 L |
| 10 | 4,000 L | 6,000 L |
| 12 | 4,800 L | 7,200 L |
Who digs and who pours the base?
Burial conditions in short: at least 10 cm of blinding concrete, a 10 cm bed of clean sand under the tank, a reinforced concrete slab at least 10 cm above the tank and no more than 20 cm of backfill on top. Part-backfill the sides, fill the tank with water, then finish with clean sand.
Replacing an old tank? Send the internal pit dimensions and we will build a tank whose diameter and length fit it.
| Work | Done by |
|---|---|
| Building the tank and fitting the openings | Laura |
| Installation guide, sent with the quote | Laura |
| Delivery to your site | Laura, or collect from the factory |
| Crane placement | Laura on request, priced in the quote |
| Excavation and block walls | You or your contractor |
| Blinding concrete, sand bed and concrete roof slab | You or your contractor |
| Backfill | You or your contractor |
The 25-year warranty and how to keep it
The factory guarantees the tank for 25 years from the invoice date against manufacturing defects, with the certificate issued in your name. Mechanical fittings carry six months.
Keep the invoice and follow the burial conditions in the installation guide. The warranty does not cover breakage from rocks in the backfill, a broken slab above the tank, or installation that departs from the guide.
Frequently asked questions
Does fibreglass heat the water?
The sun heats water, not the tank material. A buried tank stays cool; an exposed roof tank warms in summer like any other, so shade it or keep the main tank underground.
Will algae or worms grow in the tank?
Algae cannot grow without light, and our tank wall is opaque with a tight cover. Contamination usually comes from an open lid or a tank left uncleaned, so keep the manhole closed and clean every six months.
Do you dig and install?
No. We do not excavate, pour concrete or backfill. We build, deliver and crane-place the tank on request, and send the installation guide for your contractor.
How soon can I have the tank?
Common sizes are in stock; other sizes take about a week, depending on the order.
Do you deliver to my city?
Yes, to every region, with our own trucks or carriers. Delivery and crane placement are priced in the quote, or you can collect from the factory in Dammam.
Do you make septic tanks too?
Yes, single or two-chamber to your municipality's requirement. Mention it in your request and we will quote the water tank and septic tank together.
Related pages
Underground water tanks
Cooler water in summer, no rust or algae, any capacity from 2,000 litres.
Septic tanks
One sealed piece with one or two chambers to your municipality's requirement.
Tank sizing guide
The method, a table and examples for villas, buildings, mosques and rest houses.
Underground installation
Pit, sand bed, backfill and slab, step by step.
Ready for your quote?
Send the type, capacity and city, and we reply within an hour.